A sample of 7 drivers in Ohio reported the number of trips they took outside the county from where they lived. The data is reproduced below. Compute the variance of the distribution. 2.14 3.62 1.9 2.8

And replacing we got:

Now we can find the econd moment given by this formula:

And replacing we got:

And we can find the variance with this formula:

And the best answer would be:

Var (X) =1.9

Step-by-step explanation:

For this case we assume the following distribution obtained from internet:

X      F    p

1       2    2/7

2      0    0/7

3      3    3/7

4      1     1/7

5      1     1/7

_________

Tot   7     1

We can begin finding the expected value with this formula:

And replacing we got:

Now we can find the econd moment given by this formula:

And replacing we got:

And we can find the variance with this formula:

And the best answer would be:

Var (X) =1.9

answer: since the question is talking about growth you have to use the growth formula which is inital amount (1 + growth)^time

step-by-step explanation:

the intial amount is 1200, the growth is 4.8, and the time is 7. plug those numbers into the equation, also i think you have to change 4.8 into a percent. but, i have forgotton how to do that. if this is a online class go on to the lesson.